Air freshener



FIG. 1 is a front perspective view of an air freshener, showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left-side elevation view thereof; and,

FIG. 7 is a right-side elevation view thereof.

The broken lines shown in the drawings depict portions of the air freshener that form no part of the claimed design. 

CLAIM The ornamental design for an air freshener, as shown and described. 